Using street view, you can often see "Social Security" on a building or sign.

Social Security Office Directions and Notes :

FROM HWY 75/CENTRAL EXPRESSWAY, TAKE EXIT 39 ELDORADO PARKWAY, GO WEST ONE BLOCK, TURN LEFT ON CRAIG DR. PLEASE VISIT US ONLINE AT WWW.SOCIALSECURITY.GOV. IF YOU NEED TO VISIT OUR OFFICE, THE BEST TIME TO DO SO IS WEEKDAY MORNINGS AT 9:00 AM.

Mckinney Social Security Office Notes

Try doing things online like applying for disability benefits
at ssa.gov.
Social Security offices have seen their hours reduced the past few years.
Almost all Social Security offices are open 9:00 to 4:00, except
for 9:00 to noon on Wednesdays. Call to see if you can get an
appointment by phone first. Fridays may have more appointments
available.